Effects of room reverberation time and receiver position on measured binaural room impulse responses.
Lauren M. Ronsse, Lily M. Wang · The Journal of the Acoustical Society of America · 2009
This research examines the effects of room reverberation and receiver position on the fine detail in measured binaural room impulse responses, which can affect psychoacoustic perception in rooms such as speech segregation. Binaural room impulse responses have been gathered in four spaces with a range of shapes and reverberation times for three different receiver positions (center, 1 m from side wall, and 1 m from back wall) and three different source orientations (0, 45, and 90 deg from receiver). The directional loudspeaker is located approximately 0.5 m in front of the receiver for all conditions. Relationships between room reverberation times and measures impacting source localization such as interaural level differences and frequency-to-frequency fluctuations are analyzed. The results will determine if conclusions from previous research in this area conducted in a classroom [B.G. Shinn-Cunningham, N. Kopco, and T.J. Martin, J. Acoust. Soc. Am. 117, 3100–3115 (2005)] are applicable to spaces with varying shapes and reverberation times.